APA

Philmus R. M., . (1970). Into the unknown: the evolution of science fiction from Francis Godwin to H. G. Wells. Berkeley: University of California Press.

Chicago

Philmus Robert M, . 1970. Into the unknown: the evolution of science fiction from Francis Godwin to H. G. Wells. Berkeley: University of California Press.

Harvard

Philmus R. M., . (1970). Into the unknown: the evolution of science fiction from Francis Godwin to H. G. Wells. Berkeley: University of California Press.

MLA

Philmus Robert M, . Into the unknown: the evolution of science fiction from Francis Godwin to H. G. Wells. Berkeley: University of California Press. 1970.